Year Index (Units) 1997 11.124 1998 14.461 1999 20.405 2000 34.688 2001 62.696 2002 68.256 2003 70.236 2004 77.683 2005 90.308 2006 100.000 2007 106.002 2008 119.158 2009 128.830 2010 136.744 2011 151.973 2012 163.114 2013 175.664 2014 179.322 2015 181.819 2016 183.860 2017 189.616 2018 193.333 2019 196.908 2020 200.010 2021 208.181 2022 233.124 2023 261.966 2024 274.434 2025 282.937 2026 291.425 2027 300.168 2028 309.173 2029 318.448